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2 years ago

How many diagonals will a decaoctagon have?

1 answer:

6 0

If you draw an octagon (eight-sided polygon), select one vertex and construct each diagonal from this vertex, you will see there are 5 such diagonals. Thus, for each of the 8 vertices you can draw 5 diagonals and hence there can be 5 × 8 = 40 diagonals.

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At a pizza place, a large pizza cost $7. 50 and toppings cost $0. 50 each. Write an equation the can be used to represent the co

vitfil [10]

Answer:

7.50 a pizza 0.50 for peporonies

Step-by-step explanation:

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2 years ago

Jenna’s car can travel 15 miles on 300 gallons of gas. How far can it travel on 18 gallons of gas?

Allisa [31]

Answer:

the answer is 36 gallon

Step-by-step explanation:

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2 years ago

Use the following image to assist in your answer. a = - 6 - 9 - 4

vfiekz [6]

Step-by-step explanation:

Pythagoras' theorem for the smallest one :

$c^2 = 4^2 + 6^2$

$c^2 = 16 + 36$

$c^{2}$ = 52

Pythagoras' theorem for the middle one :

$b^{2}$ = $6^{2}$ + $a^{2}$

Pythagoras' theorem for the biggest one :

$(4+a)^2 = c^2 + b^2$

$16 + 8a + a^2 = 52 + b^2$

Using the formula before (for $b^2$ ) it becomes :

$16 + 8a + a^2 = 52 + (6^2 + a^2)$

$16 + 8a + a^2 = 52 + 6^2 + a^2$

$16 + 8a = 52 + 6^2$

16 + 8a = 52 + 36

16+8a = 88

8a = 88-16

8a = 72

$a = \frac{72}{8}$

a = 9

Verifying :

$b^2 = 6^2 + a^2$

$b^2 = 36 + 81$

$b^2 = 117$

$b^{2}$ = 117

The biggest one :

$(4+a)^2 = c^2 + b^2$

$(4+9)^2 = 52 + 117$

$13^2 = 169$

True

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2 years ago

Are the figures below similar? Why or why not? Determine whether the triangles shown in the image are similar.

Vika [28.1K]

Answer:

B) no, because the corresponding angles are not congruent

Step-by-step explanation:

Similar triangles must have proportional sides, as well as congruent corresponding angles. In this instance, we can see that the angles are not congruent, and so there is no need to solve for proportion.

3 0

2 years ago

Read 2 more answers

Combine like terms. 2ac+4b+6ac-7a-b=

wolverine [178]

Answer:

8ac+3b-7a

Step-by-step explanation:

2ac+6ac+4b-b-7a=

3 0

3 years ago

Read 2 more answers